Twin window fans



A ril 2, 1957 w. E. MOORE 2,787,207

TWIN WINDOW FANS Filed June 1, v19??! 7 2 Sheets-Sheet l 11/ It oore 175. 2. d gajfl mda 2i MZ'ZJS,

April 2, 1957 w. E. MOORE 2,787,207

TWIN WINDOW FANS Filed June 1, 1953 2 Sheets-Sheet 2 P7 P/E.3.

- li z nzorx Zflalfzr 'EMOOTZ United States Patent TWIN WINDOW FANSWalterE. Moore, Eelnor, Mm, assignor to Knapp-Monarch (Company, St.Louis, Mo., a corporation of Delaware Application June 1, 1953, SerialNo. 358,739

3 Claims. (CI. 98-94) This invention relates to a multi-purpose designof twin window fans and particularly to a fan structure having asupporting means which enables one fan unit to be supported in acasement window opening and another similar fan unitto be supportedtherein in tandem below the first one, as well as enabling the fan unitto be used as a floor or desk fan.

One object of the invention is to provide supporting means for a fanhousing in which a motor is mounted, together with a fan driven therebyfor drawing air into one face of the housing and discharging it from theother.

Another object is to provide supporting means in the form of a pair ofbails which are pivoted to opposite sides of the fan housing so that thehousing can be supported vertically or horizontally as desired, or atany angle in between, vertical and horizontal or the bails may beadjusted for suspending one fan in a Window opening and a second onefrom the first.

Still another object is to provide bail-like supports having serratedends which are pivotally mounted relative to opposite ends of the fanhousing and a clamp means to clamp them together for locking the pivotalconnections with the bails in any desired angular relation to eachother.

A further object is to provide a fan structureparticularly adaptable forsupport by means of a bail in position against a window screen, with asecond unit bailsuspended below the first if desired.

With these and other objects in view, my invention consists in theconstruction, arrangement and combination of the various parts of myinvention, whereby the objects contemplated are attained, as hereinaftermore fully set forth, pointed out in my claims and illustrated in theaccompanying drawings, wherein:

Figure 1 is a perspective view of two of my window fans mounted invertical tandem on a casement window.

Figure 2 is a detail front elevation of that portion of Figure 1 withinthe circle 2 showing the coaction of supporting bails for two of thetwin window fans in relation to each other.

Figure 3 is an enlarged end view of a portion of Figure 1 looking in thedirection of the arrow 3 thereon to show a supporting flange for thewindow fans.

Figure 4 is an enlarged horizontal sectional view on the line 4--4 ofFigure 1 showing a supporting clip for the fan housing.

Figure 5 is a front elevation of a portion of the supporting flange ofFigure 3.

Figure 6 is a perspective view of one of the fan units showing itsupported on a floor surface with the housing in a vertical position.

Figure 7 is a similar perspective view showing the housing in ahorizontal position.

Figure 8 is an enlarged vertical sectional view on the line 8-8 ofFigure 1 to show the clamping means for the pivotal connection of thebails; and

2,787,207 Patented Apr. 2, 1957 Figure 9 is a face view of one of theserrated ends of the bails.

On the accompanying drawings I have used the reference numeral 10 toindicate in generala casement window. One of the sections thereof isopen and the open ing is screened as at 12 in the usualmanner. My twinwindow fans are particularly designed for vertical tandem supportagainst such a screen and will now be described.

Each of the fan units comprises a housing 14 having a rear grille 16 anda front grille 13 through which air may circulate, the grilles servingas a guard for the fan blades 24 within the housing 14 driven by theusual electric motor 22. Suitable supports 24 are provided for themotor.

For supporting the housing 14 I provide a pair of bails 26 and 28. Eachbail has an eye 30 formed at one end and the face thereof is serrated asindicated at 32 in Figure 9. The serrations of the two bails areopposite as shown in Figure 8. These bails are adapted to be clampedtogether by a knob 34 from which a screw 36 projects, the screw beingthreaded into a hub 38 secured to one end of'the housing 14. Theopposite end likewise has a hub 38 andalocking knob 34..

The bails 26 and 28 may be adjusted as in Figures 6 and 7 for using thefan unit as a desk or floor fan or the like. As adjusted in Figure 6,the air flow will be horizontal. As adjusted in Figure 7, it will bevertical and of course the housing 14 may be adjusted to any angle inbetween these two for directing the air at any desired angle in avertical plane.

The bails 26 and 28 may also be adjusted as in Figure 1 so that the bail28 may support the upper fan unit as by reception thereof in'hookportions 40 of a supporting flange 42. The flange 42is adapted to beinserted between the window frame 10 and the frame of the screen 12 asillustrated, and has openings 43 for screws 45 into the window frame ifdesired for permanent mounting purposes. Usually it is suflicient tomerely slide the bracketbetween the screen and the easement window sothat it hangs on the screen.

To restrain the grille 18 of the upper fan unit against moving forwardthrough the'screen 12, a pair of clips 44 may be provided as in Figure 4and held in position by screws 46 so as to project to a position suchthat the grille 1% can engage these clips rather than the screen.

The second or lower fan unit may then be supported in relation to thefirst one by hooking its bail 28 over the depending bail 26 of the upperfan unit. The two units may be supported in reversed relation to eachother as shown in Figure 1 so that the upper one circulates the airoutwardly and the lower one circulates it inwardly, thus providing veryefficient circulation of air through the easement window.

In order to reverse the position of either fan, it is merely necessaryto remove it from its hanging position, turn it around then again hangit in position. In casement applications it is of course necessary toloosen the adjusting knobs 34 slightly, spread the bails 26 and 28 andthen retighten the knobs.

In other types of windows, the housings 14 may be supported either onthe Window sill with the bails 26 and 28 adjusted as in Fig. 6 andstanding thereon or the housings 14 may rest directly on the window sillin side-byside relation thus providing for a horizontal tandemarrangement as distinguished from a vertical tandem arrangement, asshown in Fig. 1.

Two of the fans of course can be supported side by side and either onecan be picked up and turned backwards so that without using a reversiblemotor the fans can both exhaust or intake, or one may exhaust and theother intake as desired.

When the knobs 34 are tightened they bring the serrations 32 intoengagement with each other so that one of the bails is locked withrespect to the other but the housing 14 can still be rocked as from theposition of Fig. 6 to the position of Fig. 7 without loosening the knobs34 or at least with very little loosening thereof. To prevent unduevibration the bails 26 and 28 at their corners are covered with rubbertubing as indicated at 48 and this will prevent vibration on the floor,the desk or the window sill and likewise when one fan hangs below theother it prevents the transmission of vibrations from the second one tothe first one.

From the foregoing specification it will be obvious that I have provideda comparatively simple supporting means for a fan housing so that two ofthem can be arranged in vertical tandem as shown in Figure 1 or the fanunits can be used individually as in Figures 6 and 7 as desired. I haveprovided an efficient locking means for the pivotal connections of thebails to the housing so that any desired adjustments thereof can be madeto support the fan at various angles and in various desiredarrangements.

Some changes may be made in the construction and arrangement of theparts of my twin window fans without departing from the real spirit andpurpose of my invention, and it is my intention to cover by my claimsany modified forms of structure or use of mechanical equivalents whichmay be reasonably included within their scope.

I claim as my invention:

1. In twin window fans, a pair of open-ended housings adapted to bepositioned in a window opening, a motor in each thereof, a fan driven byeach of said motors to draw air into one end of each housing anddischarge it from the other, and means for supporting said housingscomprising for each housing a pair of bails each comprising a pair ofarms and a connecting member at the outer ends of said arms, the innerends of said arms being pivoted to its housing adjacent the centers ofthe sides thereof for adjustment to spread 180 apart, one of said bailsof one housing having hook portions at the junctions of its arms andconnecting members to en gage one of the bails of the second window fanto support the two in vertical tandem with the upper bail of the upperhousing supporting both housings, and means for locking the pivotalconnections of said bail arms to said housings.

2. In twin window fans, a pair of open-ended housings adapted to bepositioned in a window opening, a motor in each of said housings, a fandriven by each motor to draw air into one end of each housing anddischarge it from the other, and means for supporting said housingscomprising a pair of bails on each housing and each comprising a pair ofarms and a connecting member at the outer ends of said arms, one of saidbails of one housing having hook portions at the junctions of its armsand connecting members to engage one of the bails of a second window fanto support the two in vertical tandem with the upper bail of the upperhousing supporting both housings.

3. In a fan structure, an open-ended housing, a motor therein, a fandriven by said motor to draw air in the one end of said housing anddischarge it from the other, a pair of U-shaped bails for supportingsaid housing, said bails having the extremities of their arms pivoted toopposite ends of the housing adjacent the center thereof and capable ofbeing spread to diametrically opposite positions, and clamp screw meansto lock the pivot adjustments, one of said bails having a hook portionto engage a hail of another fan structure to support one below the otherwhen said bails are spread to said diametrically opposite positions.

References Cited in the file of this patent UNITED STATES PATENTS595,284 Baum Dec. 7, 1897 611,190 Abernathy Sept. 20, 1898 2,123,448Weber July 12, 1938 2,451,193 Brandenburg Oct. 12, 1948 2,453,009 Sangeret a1. Nov. 2, 1948 2,525,853 Bauer Oct. 17, 1950 2,544,281 Seil Mar. 6,1951 2,620,126 Lyne Dec. 2, 1952 2,633,293 Jones Mar. 31, 1953 2,660,368Schmidt et al Nov. 24, 1953 OTHER REFERENCES Advertisement by W. W.Welch Co., Aug. 14, 1951. (Copy in Div. 49.)

